For my university dissertation project I created an application for the Pebble smartwatch for HGV drivers to tracker their working hours to keep withing EU driving laws. The application alerts the driver when they need to have a rest period. As of writing this, the application has over 100 current installs, note this number is current and can both increase and decrease. I was also contacted by a van driver courier service in London who requested a feature to support van driving hours too, which I have also implemented.